Stuck Prop?

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Jeff Register
Central Arizona Chapter President
Posts: 936
Joined: Wed Mar 11, 2015 7:19 pm
Location: Mesa, Arizona

Re: Stuck Prop?

Postby Jeff Register » Sun Oct 08, 2017 10:45 pm

Me too! used a cutting torch to get one hub off. I'm with you, Salt sucks :mrgreen:

Posts: 297
Joined: Sun Mar 15, 2015 11:26 am
Location: SouthEast Michigan

Re: Stuck Prop?

Postby kevinrude » Sat Nov 11, 2017 3:53 pm

OK, got the prop off and now have the gear housing off too. The prop shaft seal needs to be replaced, only it isn't a seal, it is two parts. Referencing the lower unit diagram provided by Garry, I need parts 550053 Prop Shaft Water Seal Seat and 550025 Prop Shaft Water Seal Disc. Any ideas where I can get these parts?


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Joined: Mon Mar 09, 2015 3:58 pm
Location: Smyrna, TN

Re: Stuck Prop?

Postby t2stroke » Sat Nov 11, 2017 4:10 pm

#550025 is available on ME & see Ebay link for #550053. ... pJ&vxp=mtr

Dan in TN

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Joined: Tue Mar 10, 2015 6:32 pm
Location: Florida

Re: Stuck Prop?

Postby FrankR » Sat Nov 11, 2017 4:42 pm

Or look for a "real" seal, 9/16" iD X 1-1/8" OD. You might have to locktite the OD

Posts: 297
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Location: SouthEast Michigan

Re: Stuck Prop?

Postby kevinrude » Sun Nov 12, 2017 11:10 am

Thanks guys! Parts ordered!

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Joined: Tue Jun 14, 2016 12:04 pm

Re: Stuck Prop?

Postby amuller » Sun Nov 12, 2017 11:38 am

kevinrude wrote:Well, I've never had this happen before.

Working on a 3HP 1947/48 MW motor. Removed the cotter pin and the prop nut, but the propeller won't come off! It is stuck. The prop is engaged with the gears, so the only thing I can figure is that the shear pin is bent or something and, as a result, has wedged itself onto the prop. Would anything else cause it to be stuck like this? I can't see any other bolts or screws holding the prop on and the parts diagram I have doesn't show any either.

I don't want to put any more pressure on the prop than I already have trying to remove it for fear it will break. So, what are my options here? Tapping around the prop hub with a mallet? Heating it up with a torch to see what happens? I'm open to suggestions.


I had a very stuck prop on a small Mercruiser outdrive. I borrowed a big three arm puller from an auto parts chain, took the arms off, and attached the puller to the bases of the prop blades with wire rope and clips, trying to protect the blades with short pieces of hose. The prop came right off. Of course, this is inelegant and there is the potential of damaging the prop, or pulling the prop off it's hub.

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